J/ApJ/535/325 Spectra of normal stars in the J-band (Wallace+ 2000)
Near-infrared classification spectroscopy: J-band spectra of fundamental MK
standards.
Wallace L., Meyer M.R., Hinkle K., Edwards S.
<Astrophys. J., 535, 325-337 (2000)>
=2000ApJ...535..325W 2000ApJ...535..325W
ADC_Keywords: Atlases ; Spectra, infrared ; Stars, normal
Keywords: infrared: stars - line: identification - stars: fundamental parameters
Abstract:
We present a catalog of J-band spectra for 88 fundamental MK standard
stars observed at a resolving power of R∼3000. This contribution
serves as a companion atlas to the K-band spectra recently published
by Wallace & Hinkle (1997, Cat. J/ApJS/111/445) and the H-band atlas
by Meyer and coworkers. We report data from 7400 to 9550cm-1
(1.05-1.34um) for stars of spectral types O7-M6 and luminosity classes
I-V as defined in the MK system. In reducing these data, special care
has been taken to remove time-variable telluric features of water
vapor. We identify atomic and molecular indexes that are both
temperature and luminosity sensitive that aid in the classification of
stellar spectra in the J band. In addition to being useful in the
classification of late-type stars, the J band contains several
features of interest in the study of early-type stellar photospheres.
Description:
The observations were obtained with the Mayall 4m telescope at Kitt
Peak National Observatory in Arizona.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 88 88 Journal of Observations
table4.dat 82 65 Equivalent Widths of Spectral Indexes
sp/* . 66 Individual spectra
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See also:
J/ApJS/111/445 : Spectra of normal stars in the K band (Wallace+ 1997)
J/ApJ/508/397 : H-band Spectral Standards (Meyer+ 1998)
J/AJ/124/3393 : Spectra of normal stars in the L-band (Wallace+, 2000)
http://www.noao.edu/archives.html : NOAO Data Archives, includes
"A Library of Medium Resolution Infrared Stellar Spectra"
Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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1- 7 A7 --- Star Star name
9- 11 A3 --- n_Star Note on Star (1)
14- 27 A14 --- Name Other name
29- 40 A12 --- SpType MK spectral type
41 A1 --- n_SpType [e] Note on SpType (1)
43- 52 A10 "YYYY/DD/MM" Obs.Date Observation date
53 A1 --- --- [,]
54- 55 I2 --- Day2 ? Second day of observation
57 A1 --- S1 [b] Spectrum selected (1)
59- 68 A10 "YYYY/DD/MM" Obs.Date2 Second date of observation
70 A1 --- S2 [b] Spectrum selected (1)
72- 81 A10 "YYYY/DD/MM" Obs.Date3 Third date of observation
83- 88 A6 --- spFile Name of the file containing the spectrum
(in the "sp" subdirectory)
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Note (1): Notes as follows:
a = Denotes spectra that also appear in the H-band atlas of
Meyer et al., 1998, Cat. J/ApJ/508/397
c = Taken from Henry et al., 1994AJ....108.1437H 1994AJ....108.1437H
d = Taken from Jaschek et al., 1964, Cat. III/18
e = Previously classified as G0Ia but is intrinsically brighter
b = Denotes highest S/N data selected for indexes listed in Table 4
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Byte-by-byte Description of file: table4.dat
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Bytes Format Units Label Explanations
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1- 7 A7 --- Star Star name
9- 13 I5 K Teff Effective temperature
15- 22 A8 --- Class MK luminosity class
24- 28 F5.2 cm-1 W(AlI) AlI equivalent width
30- 34 F5.2 cm-1 W(MnI) MnI equivalent width
36- 39 F4.2 cm-1 W(Pab) Paβ equivalent width
41- 45 F5.2 cm-1 W(HeI) HeI equivalent width
47- 51 F5.2 cm-1 W(SiI) SiI equivalent width
53- 57 F5.2 cm-1 W(MgI) MgI equivalent width
59- 63 F5.2 cm-1 W(FeI) FeI equivalent width
65- 69 F5.2 cm-1 W(CNTiO) CN and TiO equivalent width
71- 75 F5.2 cm-1 W(CI) CI equivalent width
77- 82 A6 --- spFile Name of the file containing the spectrum in
sp subdirectory
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Byte-by-byte Description of file(#): sp/*
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Bytes Format Units Label Explanations
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4- 14 F11.6 cm-1 Wave [7250.5/9901] Wavenumber (1)
16- 27 E12.7 --- Int ?=-1 Processed intensity values (2)
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Note (1): The point spacing is uniform in wavenumbers but have not been
interpoled onto a grid starting at an even fraction of a wavenumber.
Note (2): Any points that are out of range because of opaque telluric
lines, etc. have been replaced with -1.00000E+00.
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History:
Copied at ftp://ftp.noao.edu/catalogs/medresIR/J_band/
(End) Patricia Vannier [CDS] 26-Feb-2005